You're not far from me, 
Do you have any beer,?
On a serious note, I do a lot of these type of boilers, there is a large apartment complex near me with them fitted, and, a lot of the contactors that were previously replaced have been incorrectly rated and failed almost immediately on fitting,
the previous 'electrician' obviously had no concept of the rating differences between AC1 and AC3 , and the contactors were only about half the required size.
Do you have any beer,?
On a serious note, I do a lot of these type of boilers, there is a large apartment complex near me with them fitted, and, a lot of the contactors that were previously replaced have been incorrectly rated and failed almost immediately on fitting,
the previous 'electrician' obviously had no concept of the rating differences between AC1 and AC3 , and the contactors were only about half the required size.
